Combined press and waste-removing slitter



March 30,1926.- 4 1,578,854

J.'W. SCHOENDELEN COMBINED {HESS AND WASTE RBIOVING SLITT BR 2Sheets-Sheet 1 :NEENTOZ g 5 ATTORNEY- 65 A Q j March 30 1926. 1,578,854

' J. W. SCHOENDELEN IQ'OIIBINED rasss AND WASTE REMOVING su'rrsa 2Sheets-Sheet 2 TOR.

{M w= ATTORNEY Filed Nov. 19, 1923 Patented Mar. 30, 1926.

JOSEPH PANY, on NEW YORK, N. 1 A CORPORATION orNEw ERSEY,

OMBINED rR ss AND WASTE-REMOVIN 81.1mm

Application filed Nov mber 19, 1923. seriai'No. $5,458. 1

To all whom/it may concern:

Be it known that I, J osnrrr W SoHo nELnN, a citizen of the UnitedStates, resid ing in Qgden, in the county of NVeber and State of Utah,have invented a new and useful Improvement in CombinedPresses andlVaste-Bemoving Slitters, of which'the following is a specification.

The present invention relates toma'chinery for cutting sheets of tinplate,,0r the like, ito'obt'ain pieces of; proper size and form forparticular uses, such, for example, as the making of can-ends.

In order to obtain a maximum number of H A View thereof, belngtakensubstantially along cuts from'a sheet; of given-size, it has become thepracticeto cut circular pieces from the sheets in accordance with whatis known as a stagger lay-out, i. e., by cutting the piecesin rows withthe cuts of adjacent rows out of alignment. This obviously permits the.rows to be arranged closer together than would be possible withtheso-called straight cut, due to .the rounded lines of the cut.v

In order to thus minimize the wastage, particularly when relativelylarge disks are being cut, thejsheet must be quite large, so as topermit the staggered cuts, which, of course, would, be impossible with anarrow strip, such'as might'be used in straight cutting, or whenrelatively'small disks are desired. I i

first'made in the sheet and thereafter the side cuts are'made, thisnecessitatingconsiderable handling of said sheets before the full numberof cuts are made; After the central cuts have been obtained, the sheetis very limber and extremely difficult to handle, it beingimpossible toautomaticallypass' such a sheet through the feedingmechanism 'of the:press. Gonsequently,'it has been found necessary to positionjsaidsheet'for the later cuts .by, hand, or to transfer the sheet byhandr'from the press and to sever it along a median line toproduceseparate sheet por- 'tionswhich might be mechanically fed intothe press. y

Thepurpose of the present inv'entionis to overcome the difliculties justdescribed by automatically transferring the sheet from the press, afterthe central row of cuts has been made, and removing the flimsy scrapportions between the cuts of said central row, thus providing two rigidsheet portions which can be handled by the automatic feed- Cnstomarily,a central row'of cuts are.

ing devices'of thepr'esses While theremai'm ing cuts are being made.

Other objects and advantages of theinvention will be'apparent as itis'better understood froin the following description, which,

taken in connection with the accompanying drawings, discloses apreferred embodiment thereof.

Beferrmgto the drawings,

Figure 1 is afside elevation,partiallyin section I and largelydiagrammatic,"of;a ina chine assembly constructed in accordance with myinvention UNITED STATES PATENT o F E' -i W.3SGHO7ENDELEN, or OGDEN,UTAH, nssreNon'io AMERICAN CAN com- Fig.2 in a top plan and partiallysectional I the broken line 22 in Fig.1;and

Fig. 3 is a plan'vie'w ofafsheetof tin plate such asis adapted tobefacted upon by the mechanismof my I invention,- showing the staggeredlay-out of the cuts. p

Considering said drawings in detail, it will be noted that a press frame11 i's'fsupported from a base 12 and provides bearings at the top for ashaft 13, which'is driven I through the medium of a pulley ll'and 'hasmounted thereon abrake' mechanism 15and a crosshead 16, which latter'carriesan upper slide '17 in which ispositioneda punch 18.

A bed. plate 19 is supportedlf'rom' the I 7 frame and has secured tojtl' ei'up'pe'r side thereof a bolster plate 21 upon which s properposition for the first'c-ut to 'be taken therefrom, this position beingdetermined by means .of a side guide 27 and a feeding block .28, therebeing several ofsaidblocks arranged along the lower'lengthzof the, tableat such distance apart as the cutsoffa "row areto be spaced. i

The above described machine is or may be of the constructioirshown in myother application Serial No. 67 9,459 filed of'even date herewith.

After the proper number of cuts have been made in the central row, thesheet is delivfleeting plate 31 being provided at the lower end of thetable 23 to cause said sheet to be properly positioned upon saidconveyer which is inclined upwardly from the bottom of said table 23.The conveyer 29 is directed about a drum 32 mounted on a shaft 33, whichhas bearings 34 positioned upon the base members 12, and about adrum 35on a shaft 36, which is hearing in a bed portion 37 of a slittingmachine which is supported by a frame, generally indicated by thereference character 38. A supporting plate 39 extends beneath theconveyer 29 and connects said press and slit ting machine, the endsofsaid plate resting upon brackets 41 and 42' provided respectively uponthe two machines.

The conveyeris driven by means of a sprocket chain 43, taking over asprocket mounted on the end of the shaft 36 and over a similar sprocketon a shaft 44, which has bearings 'atthe upper end of a table 45 of theslitting machine and carries a pulley 46 by which it is driven source ofpower.

A feeding roller 47 is mounted on an idle shaft 48 above the conveyerdrum 35 and is rotated by the latter to hold the sheet 26 to theconveyeras it is directed therefrom onto the table'45 ofthe slitting machine.

Rotary slitter knives 49 and 51 are mounted respectively on the driveshaft 44' and an upper shaft 52, which is mounted above and inparallel'relationship to said shaft 44, said shafts being gearedtogether by means of gears 53 and 54 mounted respectively thereon.

As the sheets are fed to said slitter knives, they pass between sideguides 55 and 56,

the latter having on its inner side leaf springs 57 bearing against theedge of the sheet and holding it against the opposite guide 55.Retaining plates 58 and 59 are employed to prevent any upwarddisplacement of the sheet from the table.

It will be noted that there are two each of the knives 49 and 51 andthat these are spaced apart a sufiicient' distance to remove scrapportions 61 between the circular cuts 62, which, as noted before, arearranged in a row at the. center of the sheet. This produces twoseparate sheets 63 and 64, which are sufliciently rigid to besubsequently passed through the automatic feeding mech anism of thepresses, with the result that the difficulty of handling a large sheet,rendered limber and unwieldy by the narrow connecting webs whichconstitute the waste portions 61, is eliminated.

from any suitable After the slitting operation, the sheet 'orsacrificing all of its material advantages the form 'hereinbeforedescribed being 'merely a preferred embodiment thereoffl I claim v 1.The combinationof a press adapted to cut circular articles from metalsheets,

and sheet metal cutting means for cutting out scrap portions from theintermediate part of said sheets to make the separated" 7 parts of thesheets practicable for handling, and mechanism. operatlng said press andsaid cutting means in timed relation.-

2. The combination of a press for removing circular articlesfrom metalsheets 'so as to leave considerable areas ofmetal at either side of themedian parts of the sheets, slitting devices arrangedat a distance fromeach other for cutting through the scrap portions of the sheet so as toremovev small scrap and leave the separated side ,portlons of the sheetpracticable for further handling, and mechanism operatmg saidpressand'shtting devices 1n tnned relation.

3. fhe combination of a punch press for removing pieces of sheet metalfrom the median part of the sheet, slitting devices spaced apart fromeach other 'for'cutting out waste portions from the median part of thesheet to facilitate the subsequent handling of the separated sideportions of the sheet, means fortransferring said sheets from the pressand through'th'e slitting devices, and mechanism operating the'press,

the slitting devices, and the transferring means in timed relation.

4. The combination of a punch press adapted to remove pieces of metalfrom the central portion of a metal sheet and to thereby-leave wasteportionsof metal connecting the two side portions of the sheet, slittingmeans for cutting out said remaining pieces of waste metal sov astoleave the side portions of the sheet practicable for further handling,a conveyor for transferring thesheets from said press to said slittingmeans, and mechanism operating said press and slitting means andconveyor in timed relation.

J OSEPH WV. SCHOENDELEN.

